递归 99乘法表
1 #include <iostream> 2 using namespace std; 3 void cheng(int a,int b){ 4 if(a<=9){ 5 if(b<=a){ 6 cout<<a<<"x"<<b<<"="<<a*b<<" "; 7 cheng(a,b+1); 8 } 9 cout<<endl; 10 } 11 cheng(a+1,1); 12 } 13 int main(int argc, char** argv) { 14 cheng(1,1); 15 return 0; 16 }